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Inventor

Yoshiyuki Kumamoto

Inventor
Tokyo, JP

Overview

2→
Patents
1990
Patent span
Chemistry
Primary field (CPC C)

Patents· 2 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C08Kprimary
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients100%
PatentTitleYear
4,980,405'Rubber compositions'19904,950,705'Rubber compositions'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990Patents assigned to BRIDGESTONE CORP (2)· patent assignee history
1990Based in Tokyo, JP· patent location history
1990Based in Kodaira, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BRIDGESTONE CORP21990
Locations
LocationPatentsSpan
Tokyo, JP11990
Kodaira, JP11990